@techreport{oai:shiga-u.repo.nii.ac.jp:00014220, author = {Sakai, Yasuhiro}, issue = {No. E-15}, month = {Apr}, note = {Technical Report, This chapter critically discusses non-zero-sum games with special reference to Nash equilibrium, which is a successor of Cournot equilibrium in the theory of duopoly and oligopoly.We first focus on the "residence game" as a typical non-zero-sum game. We pick up the old and the young couples, who have to decide whether they live together or separately, and whether they live in the country or in the city. We shed new light on " generation gaps problems," with many other applications. We next turn to the "battle of the sexes," or more plainly the "dilemma of lovers". The male and the female have to find good dating spots. Whereas the male prefers to see boxing rather than ballet, the female's preference is just the opposite. We propose that contrary to the conventional way of discussions, the introduction of a third option such as going to see movies gives each couple a second best solution. Finally, comparison between "Econs" and "Humans" is carefully discussed., Discussion Paper, Series E, No. E-15, pp. 1-23}, title = {Non-Zero-Sum Games and Nash Equilibriums:Applications to Generation Gap Problems}, year = {2022} }